GB1506856A - Combination balance analyzer and vibration spectrum analyzer - Google Patents

Combination balance analyzer and vibration spectrum analyzer

Info

Publication number
GB1506856A
GB1506856A GB51111/74A GB5111174A GB1506856A GB 1506856 A GB1506856 A GB 1506856A GB 51111/74 A GB51111/74 A GB 51111/74A GB 5111174 A GB5111174 A GB 5111174A GB 1506856 A GB1506856 A GB 1506856A
Authority
GB
United Kingdom
Prior art keywords
unbalance
frequency
fed
signals
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB51111/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IRD Mechanalysis Inc
Original Assignee
IRD Mechanalysis Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IRD Mechanalysis Inc filed Critical IRD Mechanalysis Inc
Priority to GB2974377A priority Critical patent/GB1506858A/en
Priority to GB2974477A priority patent/GB1506859A/en
Priority to GB2974277A priority patent/GB1506857A/en
Publication of GB1506856A publication Critical patent/GB1506856A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/02—Details of balancing machines or devices
    • G01M1/08—Instruments for indicating directly the magnitude and phase of the imbalance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
    • G01M1/22—Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B1/00—Details
    • H03B1/04—Reducing undesired oscillations, e.g. harmonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B23/00—Generation of oscillations periodically swept over a predetermined frequency range
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B28/00—Generation of oscillations by methods not covered by groups H03B5/00 - H03B27/00, including modification of the waveform to produce sinusoidal oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/40—Impedance converters
    • H03H11/42—Gyrators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/013—Modifications of generator to prevent operation by noise or interference
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
    • H03K4/501—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator
    • H03K4/502—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator the capacitor being charged from a constant-current source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0092—Measures to linearise or reduce distortion of oscillator characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • Theoretical Computer Science (AREA)
  • Testing Of Balance (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

1506856 Measuring rotary unbalance electrically IRD MECHANALYSIS Inc 26 Nov 1974 [30 Nov 1973] 51111/74 Headings G1N and G1U The invention relates to apparatus for measuring the dynamic unbalance of a rotor 50 Fig. 7 using a displacement, velocity or acceleration pickup 54 at a bearing 52 to sense the unbalance vibrations and a pick-up 56 to produce a pulse train from a keyway 53 which is developed into sinusoidal, out-of-phase synchronous signals to be used as phase references for determining the angular position of the unbalance. The system includes active tracking filters whose centre frequency is controlled by ganged switches, and are used to remove unwanted frequency components from the vibration signals. The filters may be cut out for other tests. The pulse train from pick-up 56, fed to terminal 62 Fig. 2, is converted to a synchronous sine wave at 86 and a synchronous cosine wave at 94, both having the same constant amplitude independent of the pulse train frequency. The vibration signals from pick-up 54 are fed to terminal 60 or 61, and integrated if necessary to obtain a displacement signal, which is fed to multiplier 116 together with the reference sine signal at 86, and also fed to multiplier 120 together with the reference cosine signal at 94. The product outputs are fed through active filters 117, 121 to give D.C. signals from amplifiers 118, 122 representing the sine and cosine of the phase angle of the rotor unbalance. These modulate at 119, 223 a carrier frequency developed by generator 125 and the two modulated signals are added at 127 to produce the equivalent of the vibration signal from pick-up 54 but with no noise content. This signal is analyzed for amplitude and phase angle in a standard manner to determine the magnitude and angular position of the rotor dynamic unbalance. The reference sine and cosine signals at 86, 94 may be obtained from a digital sweep oscillator 136 instead of from the pulse train input at 62, whereby the frequency spectrum of the vibrations are analyzed, or from a power line voltage of known frequency at terminal 139, to check the frequency meter 11. A similar power line voltage at 191 enables the amplitude meter 10 and the phase meter 12 to be checked.
GB51111/74A 1973-11-30 1974-11-26 Combination balance analyzer and vibration spectrum analyzer Expired GB1506856A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2974377A GB1506858A (en) 1973-11-30 1974-11-26 Frequency sweep circuit
GB2974477A GB1506859A (en) 1973-11-30 1974-11-26 Sine/cosine generator
GB2974277A GB1506857A (en) 1973-11-30 1974-11-26 Pulse conditioning apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/420,594 US3938394A (en) 1973-11-30 1973-11-30 Combination balance analyzer and vibration spectrum analyzer

Publications (1)

Publication Number Publication Date
GB1506856A true GB1506856A (en) 1978-04-12

Family

ID=23667101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51111/74A Expired GB1506856A (en) 1973-11-30 1974-11-26 Combination balance analyzer and vibration spectrum analyzer

Country Status (6)

Country Link
US (1) US3938394A (en)
JP (1) JPS5094986A (en)
CA (1) CA1035047A (en)
DE (1) DE2456593A1 (en)
FR (5) FR2253210B1 (en)
GB (1) GB1506856A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1737125A1 (en) * 2005-06-24 2006-12-27 Renault Analog device for a filtered time derivation of an incoming signal

Families Citing this family (27)

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Publication number Priority date Publication date Assignee Title
DE2612238C3 (en) * 1976-03-23 1981-07-30 Carl Schenck Ag, 6100 Darmstadt Method for determining the vector components of an oscillation and circuit arrangement for carrying out the method
US4135244A (en) * 1977-07-20 1979-01-16 Spectral Dynamics Corporation Method and apparatus for programming and reducing runout in rotating shaft vibration signal detection
SU949342A1 (en) * 1977-12-05 1982-08-07 Специальное Опытное Проектно-Конструкторско-Технологическое Бюро Сибирского Отделения Всесоюзной Ордена Ленина Академии Сельскохозяйственных Наук Им.В.И.Ленина Method and device for detecting flaws in cyclic action objects
JPS54111871A (en) * 1978-02-22 1979-09-01 Hitachi Ltd Frequency detecting method
DE2827669C2 (en) * 1978-06-23 1980-08-14 Gebr. Hofmann Gmbh & Co Kg, Maschinenfabrik, 6100 Darmstadt Method for determining the magnitude and phase position of vibrations detected by transducers, especially in balancing technology
US4357832A (en) * 1979-04-20 1982-11-09 Ird Mechanalysis, Inc. Digital electronic balancing apparatus
JPS56130634A (en) 1980-03-19 1981-10-13 Hitachi Ltd Method and device for monitoring oscillation of rotary machine
US4423632A (en) * 1981-02-25 1984-01-03 Qyl Inc. Method and apparatus to determine the imbalance in a rotating object
US4619142A (en) * 1984-10-03 1986-10-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Emitted vibration measurement device and method
DE3534951A1 (en) * 1984-10-09 1986-04-10 Nagase Iron Works Co. Ltd., Mugi DEVICE FOR DETECTING AND DISPLAYING THE BALANCE STATE OF A TURNING BODY IN A MACHINE TOOL
US4633447A (en) * 1984-12-03 1986-12-30 Amoco Corporation Response waveform characterization of geophysical data
DE3930689A1 (en) * 1989-09-14 1991-03-28 N Proizv Ob Ispytatelnoj Techn Rotating machine vibration spectrum analyser - contains frequency code converter driven by frequency multiplier with gain dependent on desired sensitivity
FR2692668B1 (en) * 1992-06-22 1995-11-24 Equip Maintenance Indle Aer METHOD FOR MONITORING THE OPERATION OF A ROTATING ASSEMBLY SUBJECT TO MANY TRANSIENT RPM.
DE69223318T2 (en) * 1992-07-29 1998-03-19 St Microelectronics Srl RC filters for low and very low frequency applications
US5544073A (en) * 1994-06-02 1996-08-06 Computational Systems, Inc. Rotor balancing calculator
US5640490A (en) * 1994-11-14 1997-06-17 Fonix Corporation User independent, real-time speech recognition system and method
GB2312958B (en) * 1996-05-09 1998-04-15 Rotadata Ltd Analysis of motion of rotary assembly
US5760302A (en) * 1996-07-08 1998-06-02 Ford Global Technologies, Inc. Driveline system balancing method and apparatus
US6351714B1 (en) 1998-03-03 2002-02-26 Entek Ird International Corporation Order tracking signal sampling process
US6263738B1 (en) 1999-08-25 2001-07-24 General Electric Company Vibration phasor monitoring system for rotating members
US7230728B2 (en) * 2003-07-22 2007-06-12 Seagate Technology Llc Disc imbalance compensation during disc drive assembly
DK2085902T3 (en) * 2008-02-02 2018-03-12 Siemens Ind Software Nv Order tracking method and system
DE102008049530A1 (en) * 2008-09-29 2010-04-01 Prüftechnik Dieter Busch AG A method of monitoring a powertrain component of a wind turbine
US8737102B2 (en) * 2011-09-23 2014-05-27 General Electric Company Acoustic noise modification in power converters
CN104655788B (en) * 2015-02-04 2016-05-18 华北电力大学 Power capacitor noise analysis approach and device
FR3102858B1 (en) 2019-11-05 2021-10-29 Safran Method, device and computer program for monitoring a rotating machine of an aircraft
US11794800B2 (en) * 2020-05-28 2023-10-24 Panasonic Intellectual Property Management Co., Ltd. Steering-wheel grip sensor and grip detection method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501965A (en) * 1966-06-30 1970-03-24 Int Research & Dev Co Ltd Electronic vibration analyzing apparatus incorporating automatic phase and amplitude recording means
US3307408A (en) * 1966-08-10 1967-03-07 Int Research & Dev Co Ltd Synchronous filter apparatus in which pass-band automatically tracks signal, useful for vibration analysis
US3705516A (en) * 1971-09-30 1972-12-12 Northrop Corp Method and apparatus for testing the condition of a machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1737125A1 (en) * 2005-06-24 2006-12-27 Renault Analog device for a filtered time derivation of an incoming signal
FR2887709A1 (en) * 2005-06-24 2006-12-29 Renault Sas ANALOGIC ELECTRONIC DEVICE FOR PERFORMING A FILTERED TIME DERIVATION OF A NOISE INCIDENT SIGNAL

Also Published As

Publication number Publication date
FR2253210A1 (en) 1975-06-27
FR2253313A1 (en) 1975-06-27
CA1035047A (en) 1978-07-18
FR2253321A1 (en) 1975-06-27
FR2253318A1 (en) 1975-06-27
DE2456593A1 (en) 1975-06-05
FR2253210B1 (en) 1980-11-28
JPS5094986A (en) 1975-07-29
FR2253317A1 (en) 1975-06-27
US3938394A (en) 1976-02-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee